APPENDIX B: ELECTRICAL AND DATA CONNECTORS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
B-2 990-665
RS-485 IN and RS-485 OUT
NOTE: Pin connections and specifications for both RS-485 connectors are identical.
RS-485 IN / OUT CONNECTOR SPECIFICATIONS
PIN NO. DESCRIPTION PIN TYPE
1 Signal Ground Isolated ground (1 kV DC Isolation)
2 Not used
3 Not used
4 Transmit + RS-485 Driver +
5 Transmit - RS-485 Driver -
6 Not used
7 Not used
8 Receive + RS-485 Receiver +
9 Receive - RS-485 Receiver -
PIN #2 --NOT USED
PIN #3 --NOT USED
PIN #4 --TRANSMIT +
PIN #5 --TRANSMIT -
PIN #7 --NOT USED
PIN #8 --RS-485 RECEIVER +
PIN #9 -- RS-485 RECEIVER -
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